#include<iostream>
#include<vector>

using std::vector;
using std::cout;
using std::endl;
using std::cin;

int main()
{
	vector<int> ivec;
	for(int i; cin >> i; ivec.push_back(i));

	if(ivec.empty())
	{
		cout << "input at least one integer." << endl;
		return -1;
	}

	if(ivec.size() == 1)
	{
		cout << "only one integer " << ivec[0] << ", it doesn't have any adjacent elements." << endl;
		return -1;
	}

	for(int i = 0; i < ivec.size() - 1; ++i )
	{
		cout << ivec[i] +ivec[i+1] << " ";
	}
	cout << endl;
	return 0;
}

